My buddies 30th birthday is just around the corner. His wife rented a house at the beach for the weekend in Charleston. It's peanut butter jelly timeeeeee

I've had my sierra in the keg since saturday, and it's slowly picking up CO2. I want to make sure the 4 hour car ride doesn't produce a flat beer by the time we get there. Any precautions I should take? Obviously, I can't keep it cool that long, and storing it out there will be an issue. It'll get an ice bath as soon as we get there.

Of course...if its too complicated...I may just keep it all for myself at home

If it gets warm, I can see how the CO2 would go into the headspace more. However, it's only going to be four hours, so it couldn't possibly gain that much heat for that volume of beer in such a short amount of time.

If you want to combat this just put like 20 psi in the keg before you leave, and then purge it and return it to serving pressure when you get to the beach.